The 16 April 2010 major volcanic ash plume over central Europe: EARLINET lidar and AERONET photometer observations at Leipzig and Munich, Germany

Ansmann, Albert; Tesche, Matthias; Groß, Silke; Freudenthaler, Volker; Seifert, Patric; Hiebsch, Anja; Schmidt, Jörg; Wandinger, Ulla; Mattis, Ina; Müller, Detlef; Wiegner, Matthias

doi:10.1029/2010gl043809

Cited by 230 publications

(231 citation statements)

References 6 publications

Supporting

Mentioning

209

Contrasting

Unclassified

Order By: Relevance

“…The method is well suited to study heterogeneous ice formation in mixed-phased clouds (e.g., Sassen et al, 2003;Ansmann et al, 2005Ansmann et al, , 2008Ansmann et al, 2009a;Seifert et al, , 2011 and liquidwater cloud developments (e.g., Bissonnette, 2005;Donovan et al, 2015). Meanwhile, polarization lidars are intensively used to explore aerosol mixtures and to identify soil, desert, and volcanic dust (e.g., McNeil and Carswell, 1975;Iwaska and Hayashida, 1981;Winker and Osborn, 1992;Gobbi, 1998;Murayama et al, 1999Murayama et al, , 2004Cairo et al, 1999;Gobbi et al, 2000;Sakai et al, 2003;Sassen et al, 2007;Freudenthaler et al, 2009;Ansmann et al, 2010;Ansmann et al, 2011a;Groß et al, 2012;Miffre et al, 2012;Amiridis et al, 2013;Nisantzi et al, 2014). The technique permits the discrimination of desert dust or volcanic dust from other aerosols such as biomass-burning smoke, maritime particles, or urban haze (e.g., Sugimoto et al, 2003;Shimizu et al, 2004;Nishizawa et al, 2007;Ansmann et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Potential of polarization/Raman lidar to separate fine dust, coarse dust, maritime, and anthropogenic aerosol profiles

2017

View full text Add to dashboard Cite

Abstract. We applied the recently introduced polarization lidar-photometer networking (POLIPHON) technique for the first time to triple-wavelength polarization lidar measurements at 355, 532, and 1064 nm. The lidar observations were performed at Barbados during the Saharan Aerosol LongRange Transport and Aerosol-Cloud-Interaction Experiment (SALTRACE) in the summer of 2014. The POLIPHON method comprises the traditional lidar technique to separate mineral dust and non-dust backscatter contributions and the new, extended approach to separate even the fine and coarse dust backscatter fractions. We show that the traditional and the advanced method are compatible and lead to a consistent set of dust and non-dust profiles at simplified, less complex aerosol layering and mixing conditions as is the case over the remote tropical Atlantic. To derive dust mass concentration profiles from the lidar observations, trustworthy extinction-to-volume conversion factors for fine, coarse, and total dust are needed and obtained from an updated, extended Aerosol Robotic Network sun photometer data analysis of the correlation between the fine, coarse and total dust volume concentration and the respective fine, coarse, and total dust extinction coefficient for all three laser wavelengths. Conversion factors (total volume to extinction) for pure marine aerosol conditions and continental anthropogenic aerosol situations are presented in addition. As a new feature of the POLIPHON data analysis, the Raman lidar method for particle extinction profiling is used to identify the aerosol type (marine or anthropogenic) of the non-dust aerosol fraction. The full POLIPHON methodology was successfully applied to a SALTRACE case and the results are discussed. We conclude that the 532 nm polarization lidar technique has many advantages in comparison to 355 and 1064 nm polarization lidar approaches and leads to the most robust and accurate POLIPHON products.

show abstract

Section: Introductionmentioning

confidence: 99%

Potential of polarization/Raman lidar to separate fine dust, coarse dust, maritime, and anthropogenic aerosol profiles

2017

View full text Add to dashboard Cite

show abstract

“…The space-time evolution of the distribution of the volcanic plume has been observed by EARLINET (European Aerosol Research Lidar NETwork) that performed almost continuous measurements since 15 April 2010 and for the whole event until 22 May 2010. The volcanic ash was monitored over The Netherlands and Northern Germany on 16 April [Ansmann et al, 2010] …”

Section: Introductionmentioning

confidence: 99%

Observation of non‐spherical ultragiant aerosol using a microwave radar

Madonna¹,

Amodeo²,

D’Amico³

et al. 2010

Geophysical Research Letters

View full text Add to dashboard Cite

Observations of ultragiant aerosol particles performed at the CNR‐IMAA Atmospheric Observatory using a Ka‐Band Doppler radar in four different periods from 19 April to 13 May 2010 are presented. In the reported cases, the aerosol radar signatures are characterized by a similar scenario. In particular, the linear depolarization ratio shows values higher than −4 dB probably related to the effect of bulk density and to the non‐sphericity of the ultragiant particles. During the same period, volcanic aerosol layers coming from Eyjafjallajökull volcano were observed over most of European countries, including Southern Italy, using lidar technique. The observation of volcanic layers over Potenza by multi‐wavelength Raman lidar measurements suggests a volcanic origin of the ultragiant aerosol particles observed by the radar, revealing that these particles might travel in the atmosphere for more than 4000 km after their injection in the atmosphere.

show abstract

“…This explosive eruption introduced volcanic fine-grained ash and gases (for example, SO 2 ) up to the lowermost stratosphere 42,43 . In the atmosphere, sulphur-bearing gases such as SO 2 transformed into tiny sulphuric acid particles 2,44 . Aerosol size distributions within ash clouds showed a fine mode (0.1-0.6 mm) associated with sulphuric acid and/or sulphate, and a coarse mode (0.6-35 mm) associated with ash 45 .…”

Section: Discussionmentioning

confidence: 99%

Anthropogenic radionuclides in atmospheric air over Switzerland during the last few decades

et al. 2014

View full text Add to dashboard Cite

The atmospheric nuclear testing in the 1950s and early 1960s and the burn-up of the SNAP-9A satellite led to large injections of radionuclides into the stratosphere. It is generally accepted that current levels of plutonium and caesium radionuclides in the stratosphere are negligible. Here we show that those radionuclides are present in the stratosphere at higher levels than in the troposphere. The lower content in the troposphere reveals that dry and wet deposition efficiently removes radionuclides within a period of a few weeks to months. Since the stratosphere is thermally stratified and separated from the troposphere by the tropopause, radioactive aerosols remain longer. We estimate a mean residence time for plutonium and caesium radionuclides in the stratosphere of 2.5-5 years. Our results also reveal that strong volcanic eruptions like Eyjafjallajökull in 2010 have an important role in redistributing anthropogenic radionuclides from the stratosphere to the troposphere.

show abstract

The 16 April 2010 major volcanic ash plume over central Europe: EARLINET lidar and AERONET photometer observations at Leipzig and Munich, Germany

Cited by 230 publications

References 6 publications

Potential of polarization/Raman lidar to separate fine dust, coarse dust, maritime, and anthropogenic aerosol profiles

Potential of polarization/Raman lidar to separate fine dust, coarse dust, maritime, and anthropogenic aerosol profiles

Observation of non‐spherical ultragiant aerosol using a microwave radar

Anthropogenic radionuclides in atmospheric air over Switzerland during the last few decades

Contact Info

Product

Resources

About